gcc/testsuite/gcc.dg/torture/pr53663-3.c


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/* { dg-do run } */

extern void abort (void);

union u
{
  int i;
  float f;
} v;

float foo (float *f)
{
  *f = 1;
  v.i = 0;
  v.f = 0.;
  return *f;
}

int main()
{
  if (foo (&v.f) != 0.)
    abort ();
  return 0;
}